When the milkman alerts police to two bodies at the fashionable Hampstead home of Andrew and Kim Light, it seems obvious who the deceased are . . . until Mr Light walks through the door.

Just who is the other man? Is Andrew Light as innocent as he'd like to appear, or does his smooth lawyer's manner hide a cruel and callous character? As the investigation develops, it becomes clear that there are far more sinister forces at work, and a frightening character has infiltrated the fashionable world of Hampstead.